Influence of thermal treatment on polyphenol extraction of wine cv. André

Jozef Ševcech, Ľubica Vicenová, Katarína Furdíková and Fedor Malík
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Jozef Ševcech: Department of Biochemical Technology, Institute of Biotechnology and Food Science Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Bratislava, Slovak Republic
Ľubica Vicenová: Department of Biochemical Technology, Institute of Biotechnology and Food Science Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Bratislava, Slovak Republic
Katarína Furdíková: Department of Biochemical Technology, Institute of Biotechnology and Food Science Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Bratislava, Slovak Republic
Fedor Malík: Department of Biochemical Technology, Institute of Biotechnology and Food Science Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Bratislava, Slovak Republic

Czech Journal of Food Sciences, 2015, vol. 33, issue 1, 91-96

Abstract: The extraction of polyphenols and colour parameter development of the grape variety André processed by thermal maceration techniques were examited. Comparing four different thermal maceration processes we have found out that the cold soak combined with classical maceration had the most significant effect on the extraction of total polyphenols and anthocyanins. Concentration of total phenols was more than 27% higher than in a thermovinificated sample. These techniques have also offered wines with the highest colour intensity. There was no considerable influence of maceration on the main products of ethanol fermentation but an effect on the concentration of total acids in wine was observed. In all cases fermentation caused a decrease of total phenols in André wines.

Keywords: temperature; wine; grape; colour (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjf:v:33:y:2015:i:1:id:286-2014-cjfs

DOI: 10.17221/286/2014-CJFS

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